Gefran 2400 Guida rapida

2400/2500 PROFIBUS

80018C_MSW_2400-2500-Profibus_1209_ENG

Page 1

GUIDE TO CONFIGURATION

AND NETWORK INSTALLATION

PROFIBUS

Code: 80018C -ENGLISH

Edition: 04 -12/09

Profibus firmware version: 01.1x

CONTENTS

pAGINA page

1 INTRODUCTION ......................................................................................................................2

2 TECHNICAL CHARACTERISTICS..........................................................................................2

3 INSTALLATION........................................................................................................................2

3.1 ELECTRICAL CONNECTIONS TO PROFIBUS NETWORKS........................................................................2

3.2 CONFIGURATION OF PROFIBUS NETWORK ADDRESS............................................................................4

3.3 EXAMPLE OF PROFIBUS NETWORK WITH HARDWARE NODE ADDRESS SELECTION .......................5

4 PROFIBUS-DP DATA STRUCTURE .......................................................................................6

4.1 CHANGE NODE ADDRESS TELEGRAM (SAP 55) .......................................................................................6

4.2 CONFIGURATION TELEGRAM (SAP 62).......................................................................................................6

4.3 PARAMETERISATION TELEGRAM (SAP 61)................................................................................................7

4.4 DIAGNOSTICS DATA REQUEST TELEGRAM (SAP 60)...............................................................................8

4.5 DATA EXCHANGE (SAP DEFAULT) ..............................................................................................................9

5 USING PROFIBUS 2400/2500 INSTRUMENTS WITH SIEMENS STEP7.............................13

5.1 CONFIGURATION.........................................................................................................................................13

5.2 PARAMETERISATION...................................................................................................................................14

5.3 S7 BLOCKS FOR THE MANAGING OF INSTRUMENTS 2400 AND 2500 IN PROFIBUS..........................16

5.4 STANDARD AREA FOR SLAVE DIAGNOSTICS .........................................................................................26

5.5 CHANGING NODE ADDRESS......................................................................................................................27

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80018C_MSW_2400-2500-Profibus_1209_ENG

1 INTRODUCTION

The 2400 series of Fast Displays / Alarm Units and the 2500 series of High Performance Controllers with

PROFIBUS-DP Fieldbus interface provide quick integration of typical instrument functions in advanced automation

systems (such as PLC, Supervision Systems, etc.) interconnected via communication networks and standard

EN50170 “PROFIBUS” protocols.

This guide does not describe the “PROFIBUS” Fieldbus: it is assumed that the user is already informed and that he

will refer to the above-mentioned standard or to the official website of the P.N.O. (Profibus Network Organization):

www.profibus.com for any updates.

It is also assumed that the user already has knowledge of the technical characteristics of the 2400/2500, contained

in user manuals enclosed with the products or downloadable from GEFRAN S.P.A.’s website: www.gefran.com.

2 TECHNICAL CHARACTERISTICS



PROFIBUS-DP V0 Slave



Data exchange with PROFIBUS Master 16 I/O process words, configurable, with 35msec minimum refresh

rate.



Automatic identification of communication speed of PROFIBUS network from 9600Baud to 12Mbaud.



Hardware selection of network address via rotary switch (1…99).



Software selection of network address via “SET_SLAVE_ADD” telegram (as alternative to hardware selection).



LEDs for diagnostics and state of PROFIBUS network.



Standard RS485 interface in accordance with EN50170, galvanically isolated from power supply.

Additional technical details on PROFIBUS specifications may be found in the attached file 25000A40.gsd or

24000A40.gsd .

3 INSTALLATION

For a complete description of installation procedures and electrical connections, see the “USER AND

WARNINGS” manual for the 2400 or 2500, enclosed with the products.

3.1 ELECTRICAL CONNECTIONS TO PROFIBUS NETWORKS

24 25 26 27 28 29 30 31 32 33

PROFIBUS

RxD/TxD-N

RxD/TxD-P

80018C_MSW_2400-2500-Profibus_1209_ENG

Page 3

When the instrument is the last node of the PROFIBUS network you have to terminate the line end by activating

the dip-switch in the module.

In accordance with EN50170, the shielded cable must have special characteristics to guarantee correct

communication between PROFIBUS devices up to 12Mbaud:

PARAMETER

TYPE “A” CABLE

Impedance in Ω135…165

Capacity in pF/m < 60

Loop resistance in Ω/Km < 110

Nucleus diameter in mm > 0.64

Nucleus section in mm

> 0.34 (AWG22)

By using cables with these characteristics, you can have the following line length:

Baudrate in Kbit/sec

9.6 19.2 45.45

93.75

187.5

500 1500 3000 6000 12000

Max. length in mt.

1200 1200 1200 1200 1000 400 200 100 100 100

GEFRAN S.p.A. supplies cables and PROFIBUS-approved connection systems as accessories.

DESCRIZIONE LED

“STATUS”

(GREEN)

PROFIBUS

Opera

tive state

OFF No communication with Master PROFIBUS

Flash 1000msec "AUTOMATIC BAUDRATE RESEARCH" State

Flash 250msec "WAIT FOR PARAMETRIZATION" State

Flash 50msec "WAIT FOR CONFIGURATION" State

Ignited fixed “DATA EXCHANGE” State

“ERROR”

(RED)

ROFIBUS

Communication errors

OFF No communication errors

Flash 1000msec "States not possible" Error

Flash 250msec "DP_State not possible" Error

Flash 50msec "WD_State not possible" Error

Ignited fixed Out of order card

“DATA EXCHANGE”

(YELLOW)

ASIC

State

OFF “DATA EXCHANGE” State

Ignited fixed Other operating states

“LINE END”

DIP SWITCH

“NODE ID”

ROTARY SWITCH

LEDS

x10 x1

“NODE ID”

ROTARY SWITCH

LEDS

(under printed

circuit)

“LINE END”

DIP SWITCH

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80018C_MSW_2400-2500-Profibus_1209_ENG

3.2 CONFIGURATION OF PROFIBUS NETWORK ADDRESS

3.2.1 CONFIGURATION OF PROFIBUS NETWORK ADDRESS VIA HARDWARE

The hexadecimal rotary switches on the 2400/2500 PROFIBUS module show the PROFIBUS network address

node that is acquired when the instrument is switched on (see figure on previous page).

2400/2500 instruments come from the factory with the rotary switch in position “00.” The user has to assign the

correct position, considering that only “01” to “99” are valid positions.

The other rotary switch positions are for the special procedures described in the chapter “Installation of the

MODBUS network.”

3.2.2 CONFIGURATION OF PROFIBUS NETWORK ADDRESS VIA SOFTWARE

With the appropriate telegram (see paragraph 4.1), you can give the node address (1…124) and deactivate the

address function of the rotary switch on the module. To restore the normal function of the rotary switch, send node

address 125: the node address will immediately be reassigned via the rotary switch.

With this characteristic, you can expand the number of 2400/2500 instruments in a Profibus network by using

addresses 100 to 124.

Note:

Check that the Profibus Master hardware supports transmission of the above-described telegram.

Example of software configuration:

1. Rotary-Switch of instrument “x10” in position 1 and “x1” in position 0.

The Profibus network address is 10.

2. Address 2 is sent to instrument via PROFIBUS software.

The Profibus network address becomes 2.

3. Rotary-Switch of instrument “x10” in position 4 and “x1” in position 1.

Any change of the rotary-switch is insignificant for node addressing.

The Profibus network address remains 2.

4. Address 125 is sent to instrument via software.

The rotary-switch can now set the Profibus network address.

The Profibus network address becomes 41.

3.2.3 CONFIGURATION PARAMETERS

The following parameters contained in the menu “Ser” must be set-up:

Cod = 1

bAu = 4

Par = 0

For the functionalities to make reference the relative user’s manuals.

80018C_MSW_2400-2500-Profibus_1209_ENG

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3.3 EXAMPLE OF PROFIBUS NETWORK WITH HARDWARE NODE ADDRESS SELECTION

HMI

Profibus Slave

node 1

PLC

Profibus Master

Class 1 node 2

DRIVE

Profibus Slave

node 3

2500

Profibus Slave

node 4

2500

Profibus Slave

node 5

2500

Profibus Slave

node 99

2500

Modbus

Node 1

2500

Modbus

Node 1

2500

Modbus

Node 1

2500

Profibus Slave

node 6

2500

Modbus

Node 1

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80018C_MSW_2400-2500-Profibus_1209_ENG

4 PROFIBUS-DP DATA STRUCTURE

The “Configuration Telegram” (SAP 62) managed by the PROFIBUS Master has to contain the exact configuration

of data (number of bytes, format and consistency) exchanged during the “DATA EXCHANGE” operative state (SAP

DEFAULT).

By means of an area of 7 consistent bytes, always present, defined Parametric Data, the PROFIBUS Master (PLC

or Supervisor) can access any parameter of the instrument’s MODBUS memory map.

A second area contains 32 I/O bytes maximum, defined Process data, that correspond to 16 read variables and 16

write variables of the instrument’s MODBUS memory map.

The user can select the read or write variables to attribute to the Process data, based on the application, by

means of the “Parameterization Telegram” (SAP 61).

When the PROFIBUS Master requests diagnostics from the instrument by means of the “Diagnostics Data Request

Telegram” (SAP 60), 1 word will be transmitted that it evidences an eventual breakdown in the instrument

4.1 CHANGE NODE ADDRESS TELEGRAM (SAP 55)

Class 2 Profibus Masters can change the address of Slaves with the “Set_Slave_Add” function.

BYTE

DESCRIPTION

VALUE

(hex)

1 New address n

2 Identifying number (high byte) 0A

3 Identifying number (low byte) 40

4 Enable (00)\Disable (01) other changes 00

4.2 CONFIGURATION TELEGRAM (SAP 62)

The PROFIBUS Master sends this to all Slave nodes before entering the “DATA EXCHANGE” operative state; in

case of incorrect configuration, the instrument will not communicate with the Master.

In the following table the maximum configuration is visualized.

BYTE

DESCRIPTION

VALUE

(hex)

0 PARAMETER DATA (7 bytes I/O consistent) 0xB6

1 PROCESS DATA 1 (1 word I/O) 0x70

2 PROCESS DATA 2 (1 word I/O) 0x70

3 PROCESS DATA 3 (1 word I/O) 0x70

4 PROCESS DATA 4 (1 word I/O) 0x70

5 PROCESS DATA 5 (1 word I/O) 0x70

6 PROCESS DATA 6 (1 word I/O) 0x70

7 PROCESS DATA 7 (1 word I/O) 0x70

8 PROCESS DATA 8 (1 word I/O) 0x70

9 PROCESS DATA 9 (1 word I/O) 0x70

10 PROCESS DATA 10 (1 word I/O) 0x70

11 PROCESS DATA 11 (1 word I/O) 0x70

12 PROCESS DATA 12 (1 word I/O) 0x70

13 PROCESS DATA 13 (1 word I/O) 0x70

14 PROCESS DATA 14 (1 word I/O) 0x70

15 PROCESS DATA 15 (1 word I/O) 0x70

16 PROCESS DATA 16 (1 word I/O) 0x70

80018C_MSW_2400-2500-Profibus_1209_ENG

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4.3 PARAMETERISATION TELEGRAM (SAP 61)

The PROFIBUS Master uses this protocol before entering the “DATA EXCHANGE” operative state to identify itself

to the instrument and specify how it has to function. See the attached file 24000A40.gsd or 2500A40.gsd for

standard PROFIBUS parameterisations; the implementations introduced by byte 11 let the user define which

instrument variables to read and write in the Process data of that PROFIBUS node.

INSTRUMENTS

2400

2500

BYTE

DESCRIPTION

DEFAULT

HEX

DEFAULT

HEX

1≈7 In accordance with EN50170 - -

8≈10 Reserved 00 00

11 Process Data Input 1 (MSB) (530) PV1 LSW 02 (530) PV1 LSW 02

12 Process Data Input 1 (LSB) 12 12

13 Process Data Input 2 (MSB) (531) PV1 MSW 02 (531) PV1 MSW 02

14 Process Data Input 2 (LSB) 13 13

15 Process Data Input 3 (MSB) (536) Input 1 LSW 02 (532) Active SetPoint LSW 02

16 Process Data Input 3 (LSB) 18 14

17 Process Data Input 4 (MSB) (537) Input 1 MSW 02 (533) Active SetPoint MSW 02

18 Process Data Input 4 (LSB) 19 15

19 Process Data Input 5 (MSB) (538) Input 2 LSW 02 (534) Deviation SP-PV LSW 02

20 Process Data Input 5 (LSB) 1A 16

21 Process Data Input 6 (MSB) (539) Input 2 MSW 02 (535) Deviation SP-PV LSW 02

22 Process Data Input 6 (LSB) 1B 17

23 Process Data Input 7 (MSB) (540) Input 3 LSW 02 (536) Input 1 LSW 02

24 Process Data Input 7 (LSB) 1C 18

25 Process Data Input 8 (MSB) (541) Input 3 MSW 02 (537) Input 1 MSW 02

26 Process Data Input 8 (LSB) 1D 19

27 Process Data Input 9 (MSB) (542) Input 4 LSW 02 (538) Input 2 LSW 02

28 Process Data Input 9 (LSB) 1E 1A

29 Process Data Input 10 (MSB) (543) Input 4 MSW 02 (539) Input 2 MSW 02

30 Process Data Input 10 (LSB) 1F 1B

31 Process Data Input 11 (MSB) (544) Math funct. A LSW 02 (540) Input 3 LSW 02

32 Process Data Input 11 (LSB) 20 1C

33 Process Data Input 12 (MSB) (545) Math funct. A MSW 02 (541) Input 3 MSW 02

34 Process Data Input 12 (LSB) 21 1D

35 Process Data Input 13 (MSB) (546) Math funct. B LSW 02 (542) Input 4 LSW 02

36 Process Data Input 13 (LSB) 22 1E

37 Process Data Input 14 (MSB) (547) Math funct. B MSW 02 (543) Input 4 MSW 02

38 Process Data Input 14 (LSB) 23 1F

39 Process Data Input 15 (MSB) (1189) Controller status 04 (544) Math function A LSW 02

40 Process Data Input 15 (LSB) A5 20

41 Process Data Input 16 (MSB) (1192) Alarm status 04 (545) Math function A MSW 02

42 Process Data Input 16 (LSB) A8 21

43 Process Data Output 1 (MSB) (554) Alarm Point 1 LSW 02 (548) Local Setpoint LSW 02

44 Process Data Output 1 (LSB) 2A 24

45 Process Data Output 2 (MSB) (555) Alarm Point 1 MSW 02 (549) Local Setpoint MSW 02

46 Process Data Output 2 (LSB) 2B 25

47 Process Data Output 3 (MSB) (556) Alarm Point 2 LSW 02 (550) Setpoint 1 LSW 02

48 Process Data Output 3 (LSB) 2C 26

49 Process Data Output 4 (MSB) (557) Alarm Point 2 MSW 02 (551) Setpoint 1 MSW 02

50 Process Data Output 4 (LSB) 2D 27

51 Process Data Output 5 (MSB) (558) Alarm Point 3 LSW 02 (552) Setpoint 2 LSW 02

52 Process Data Output 5 (LSB) 2E 28

53 Process Data Output 6 (MSB) (559) Alarm Point 3 MSW 02 (553) Setpoint 2 MSW 02

54 Process Data Output 6 (LSB) 2F 29

55 Process Data Output 7 (MSB) (560) Alarm Point 4 LSW 02 (554) Alarm Point 1 LSW 02

56 Process Data Output 7 (LSB) 30 2A

57 Process Data Output 8 (MSB) (561) Alarm Point 4 MSW 02 (555) Alarm Point 1 MSW 02

58 Process Data Output 8 (LSB) 31 2B

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80018C_MSW_2400-2500-Profibus_1209_ENG

59 Process Data Output 9 (MSB) (556) Alarm Point 5 LSW 02 (556) Alarm Point 2 LSW 02

60 Process Data Output 9 (LSB) 32 2C

61 Process Data Output 10 (MSB) (557) Alarm Point 5 MSW 02 (557) Alarm Point 2 MSW 02

62 Process Data Output 10 (LSB) 33 2D

63 Process Data Output 11 (MSB) (558) Alarm Point 6 LSW 02 (558) Alarm Point 3 LSW 02

64 Process Data Output 11 (LSB) 34 2E

65 Process Data Output 12 (MSB) (559) Alarm Point 6 MSW 02 (559) Alarm Point 3 MSW 02

66 Process Data Output 12 (LSB) 35 2F

67 Process Data Output 13 (MSB) (560) Alarm Point 7 LSW 02 (560) Alarm Point 4 LSW 02

68 Process Data Output 13 (LSB) 36 30

69 Process Data Output 14 (MSB) (561) Alarm Point 7 MSW 02 (561) Alarm Point 4 MSW 02

70 Process Data Output 14 (LSB) 37 31

71 Process Data Output 15 (MSB) (562) Alarm Point 8 LSW 02 (562) Alarm Point 5 LSW 02

72 Process Data Output 15 (LSB) 38 32

73 Process Data Output 16 (MSB) (563) Alarm Point 8 MSW 02 (563) Alarm Point 5 MSW 02

74 Process Data Output 16 (LSB) 39 33

The “Process Data” are freely configurable and correspond to the MODBUS address of the corresponding variable,

shown in the MODBUS MEMORY MAP document of the 2400/2500 instruments.

4.4 DIAGNOSTICS DATA REQUEST TELEGRAM (SAP 60)

When the PROFIBUS Master requests diagnostics data from the instrument, the instrument replies with 6 standard

data bytes and 3 bytes representing specific product diagnostics.

BYTE

DESCRIPTION

VALUE (hex)

1 ≈6 In accordance with standard EN50170 -

7 Length of external diagnosis 2

8 MSB external diagnostics xx

9 LSB external diagnostics xx

With “xx=00” in absence of alarms and “xx=FF” with 2400/2500 in fault state.

80018C_MSW_2400-2500-Profibus_1209_ENG

Page 9

4.5 DATA EXCHANGE (SAP DEFAULT)

After checking the correct instrument configuration and parameterisation via the telegrams described above, the

PROFIBUS Master activates the “DATA EXCHANGE” protocol in which it cyclically transmits some bytes in output

and reads some bytes in input to the PROFIBUS Slaves.

As mentioned above, there is an area of 7 bytes defined “Parametric Data” and an area of 32 bytes defined

“Process data” both in output and in input.

OUTPUT DATA

(from PROFIBUS Master to Slave)

PARAMETRIC

DATA

PROCESS DATA

“REQUEST” WORD 1 WORD 2 WORD 3 WORD 4 WORD 16

MSB LSB MSB LSB MSB LSB MSB LSB ≈MSB LSB

8 9 10 11 12 13 14 15 38 39

INPUT DATA

(from PROFIBUS Slave to Master)

PARAMETRIC

DATA

PROCESS DATA

“REPLY” WORD 1 WORD 2 WORD 3 WORD 4 WORD 16

MSB LSB MSB LSB MSB LSB MSB LSB ≈MSB LSB

8 9 10 11 12 13 14 15 38 39

“Parametric data” are “consistent” data that let you read or write any MODBUS variable, in both bit format and in

word format, in the 2400/2500 instruments connected to the PROFIBUS node.

PARAMETRIC DATA

BYTE

PARAMETER

DESCRIPTION

1 TRG TRIGGER BYTE: must be incremented by 1 at each new Request.

The Reply is correct only when the value is the same.

2 ADD SLAVE MODBUS address of 2400/2500 instrument (default = 1)

3 FC Function code to specify process: Bit/Word Read/Write

4 DATUM 1 Depends on FUNCTION CODE

5 DATUM 2 Depends on FUNCTION CODE

6 DATUM 3 Depends on FUNCTION CODE

7 DATUM 4 Depends on FUNCTION CODE

4.5.1 PARAMETRIC DATA: READING A BIT

Request bytes

TRG

ADD SLAVE

ADD MSB

ADD LSB

NB MSB

NB LSB

Trigger Slave

Address 1 or 2 Address Bit to

read Address Bit to

read Number of bit

to read.

(always 00)

Number of bit

to read.

(always 01)

Reply bytes

TRG

ADD SLAVE

BIT

Reply to set

trigger Confirm Slave

address Confirm

process code.

(1 or 2)

Number of

bytes read

(always 1)

Value of bit:

0 or FF Empty Empty

Page 10

80018C_MSW_2400-2500-Profibus_1209_ENG

4.5.2 PARAMETRIC DATA: READING A WORD

Request bytes

TRG

ADD SLAVE

ADD MSB

ADD LSB

NW MSB

NW LSB

Trigger Slave

Address 3 or 4 Address word

to read Address word

to read No. of word to

read

(always 00)

No. of word to

read

(always 01)

Reply bytes

TRG

ADD SLAVE

W MSB

W LSB

Reply to set

trigger Confirm Slave

address Confirm

process code

Number of

bytes read

(always 2)

Msb value of

word Lsb value of

word Empty

4.5.3 PARAMETRIC DATA: WRITING A BIT

Request bytes

TRG

ADD SLAVE

DD MSB

ADD LSB

BIT

Trigger Slave

Address 5 Address bit to

write Address bit to

write Value bit to

write

(00 or FF)

Always 00

Reply bytes

TRG

ADD SLAVE

ADD MSB

ADD LSB

BIT

Reply to set

trigger Confirm Slave

address Confirm

process code

Address bit

written Address bit

written Value bit

written

(00 or FF)

Always 00

4.5.4 PARAMETRIC DATA: WRITING A WORD

Request bytes

TRG

ADD SLAVE

ADD MSB

ADD LSB

W MSB

W LSB

Trigger Slave

Address 6 Address word

to write Address word

to write Value word to

write Value word to

write

Reply bytes

TRG

ADD SLAVE

ADD MSB

ADD LSB

W MSB

W LSB

Reply to set

trigger Confirm Slave

address Confirm

process code

Address word

written Address word

written Msb value

word written

Lsb value

word written

In case of error, 80hex plus the requested process code will be shown instead of the process code. The error code

will be shown in the CODE field.

Reply bytes

TRG

ADD SLAVE

CODE

Reply to set

trigger Confirm Slave

address Process code

+ 80hex Error code Empty Empty Empty

The error codes are:

1 = Illegal function 6 = Slave device busy

2 = Illegal data address 9 = Illegal number data

3 = Illegal data value 10 = Read only data

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